Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)

A series of experiments were conducted to evaluate the fish and vegetable production in a recirculating aquaponic system In the first experiment, the efficiency of three recirculating aquaculture systems (plant as a biofilter, a simple handmade- biofilter and combination of both plant and biofilt...

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Main Author:	Rafiee, Gholamreza
Format:	Thesis
Language:	English English
Published:	2003
Subjects:	Aquaculture - Nutrient system - Tilapia - Case studies Aquaculture - Nutrient system - Lettuce - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/10641/1/FP_2003_9_A.pdf
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id	my-upm-ir.10641
record_format	uketd_dc
spelling	my-upm-ir.106412011-05-06T07:57:32Z Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia) 2003-03 Rafiee, Gholamreza A series of experiments were conducted to evaluate the fish and vegetable production in a recirculating aquaponic system In the first experiment, the efficiency of three recirculating aquaculture systems (plant as a biofilter, a simple handmade- biofilter and combination of both plant and biofilter) in the production of fish and removal of N-compounds were evaluated. It was concluded that all the systems were efficient both in the removal of N-compounds as well as giving high red tilapia (Oreochromis sp.) and lettuce (lactuca sativa var longifolia) production. Within a period of fish culture (15 weeks), and a period of lettuce culture (5 weeks), the yield of red tilapia and lettuce ranged from 13.61 to 19.41 kg/m3 and from 0.851 to 2.87 kg/m2 in the hydroponic area, respectively. Based on the results of the first experiment, the system with the use of plant as a biofilter was selected as a model for investigation of the nutrient removal and reabsorption in an aquaponic system The main parts of the system consisted of a black fiberglass tank (110L x 84 W x 100 H cm) equipped with three hydroponics troughs (110L x 30 W x 5 cm Depth), and a submersible pump (Model Aqua, 1500) for recirculating the water through the culture system In the second, third and fourth experiments, the total ammonia excretion by red tilapia (the endogenous ammonia excretion related to catabolism of body protein and exogenous ammonia excretion related to metabolism of feed protein), as well as gaseous ammonia escape rate during different stages of its growth from the culture system were evaluated. It was found that the weight of fish significantly affected ammonia excretion. The rate of total N content of feed excreted by red tilapia ranged from 31.10 to 54.20% for 20-200g red tilapia On average, 39.54% of the nitrogen content of fish feed was excreted as ammonia-N by red tilapia. Water recycling influenced the escape of ammonia due to ventilation an in the culture system. However, the rate of ammonia escaping from the system, decreased inversely with an increase in the fish weight. The percentage of escaped ammonia ranged from 7-72% of total ammonia excreted by fed fish. Aquaculture - Nutrient system - Tilapia - Case studies Aquaculture - Nutrient system - Lettuce - Case studies 2003-03 Thesis http://psasir.upm.edu.my/id/eprint/10641/ http://psasir.upm.edu.my/id/eprint/10641/1/FP_2003_9_A.pdf application/pdf en public phd doctoral Universiti Putra Malaysia Aquaculture - Nutrient system - Tilapia - Case studies Aquaculture - Nutrient system - Lettuce - Case studies Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Aquaculture - Nutrient system - Tilapia - Case studies Aquaculture - Nutrient system - Lettuce - Case studies
spellingShingle	Aquaculture - Nutrient system - Tilapia - Case studies Aquaculture - Nutrient system - Lettuce - Case studies Rafiee, Gholamreza Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)
description	A series of experiments were conducted to evaluate the fish and vegetable production in a recirculating aquaponic system In the first experiment, the efficiency of three recirculating aquaculture systems (plant as a biofilter, a simple handmade- biofilter and combination of both plant and biofilter) in the production of fish and removal of N-compounds were evaluated. It was concluded that all the systems were efficient both in the removal of N-compounds as well as giving high red tilapia (Oreochromis sp.) and lettuce (lactuca sativa var longifolia) production. Within a period of fish culture (15 weeks), and a period of lettuce culture (5 weeks), the yield of red tilapia and lettuce ranged from 13.61 to 19.41 kg/m3 and from 0.851 to 2.87 kg/m2 in the hydroponic area, respectively. Based on the results of the first experiment, the system with the use of plant as a biofilter was selected as a model for investigation of the nutrient removal and reabsorption in an aquaponic system The main parts of the system consisted of a black fiberglass tank (110L x 84 W x 100 H cm) equipped with three hydroponics troughs (110L x 30 W x 5 cm Depth), and a submersible pump (Model Aqua, 1500) for recirculating the water through the culture system In the second, third and fourth experiments, the total ammonia excretion by red tilapia (the endogenous ammonia excretion related to catabolism of body protein and exogenous ammonia excretion related to metabolism of feed protein), as well as gaseous ammonia escape rate during different stages of its growth from the culture system were evaluated. It was found that the weight of fish significantly affected ammonia excretion. The rate of total N content of feed excreted by red tilapia ranged from 31.10 to 54.20% for 20-200g red tilapia On average, 39.54% of the nitrogen content of fish feed was excreted as ammonia-N by red tilapia. Water recycling influenced the escape of ammonia due to ventilation an in the culture system. However, the rate of ammonia escaping from the system, decreased inversely with an increase in the fish weight. The percentage of escaped ammonia ranged from 7-72% of total ammonia excreted by fed fish.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Rafiee, Gholamreza
author_facet	Rafiee, Gholamreza
author_sort	Rafiee, Gholamreza
title	Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)
title_short	Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)
title_full	Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)
title_fullStr	Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)
title_full_unstemmed	Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)
title_sort	dynamic of nutrients in a recirculating aquaponic system using red tilapia (oreochromis sp.) and lettuce (lactuca sativa varlongifolia)
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Agriculture
publishDate	2003
url	http://psasir.upm.edu.my/id/eprint/10641/1/FP_2003_9_A.pdf
_version_	1747811166439079936

Dynamic of Nutrients in a Recirculating Aquaponic System Using Red Tilapia (Oreochromis Sp.) and Lettuce (Lactuca Sativa Varlongifolia)

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